I’m not an expert but I suppose that it is the Pixhawk firmware that initialise and configure the GPS at boot if the Autoconfig option in Mission Planner is enabled .
I have a big configuration problem with a Drotek M8P RTK Rover Gps .
If I let with Autoconfig option the Pixhawk to configure the Gps , I’m not able to receive any RTK data while if I disable the option and use a manual Gps configuration RTK datas are received once injected via Mavlink.
The second element that let me think there is a problem is that if I allows Autoconfig option , I receive some error messages related to GPS 1 even if only a GPS is present in the system and the second Gps is set as “not present” in Mission planner .